Wrench.



PATENTED JUNE 12, 1906.

W. H. GLOVER.

WRENCH.

APPLICATION FILED NOV. 20, 1905 UNITE STATES PATENT OFFICE.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed N vvemb r 20, 1905. Serial No. 288,135.

To all whom, it may concern.-

Be it known that I, WILLIAM H. GLovER, a citizen of the United States, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Wrenches, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to that character of wrenches commonly known as quick-action wrenches and which are so constructed that a movable jaw may be instantly reciprocated toward a fixed jaw and with the same facility retracted therefrom.

, My invention also relates to means whereby an exact adjustment of the movable jaw may be secured.

Figure I is a side elevation, partly in section. Fig. II is a perspective view of the movable-jaw-actuating members. Fi III iBs a longitudinal section taken on line III III,

' 1 designates the body of my wrench, having a fixed jaw 2 at one end and terminating at the other end in a suitable handle 3.

4 designates a movable jaw, carried by a shank 5, which is arranged to slide freely within the body 1 of the wrench, said shank 5 being provided with a longitudinal slot 6, made to accommodate a stop-screw 7, which passes through the wrench-body 1 and is securely seated therein. The shank 5 is thereby permitted to slide in the body 1 to only such degree as the length of the slot 6 willpermit. The shank5 terminates in a screw-rod 8. The screw-rod 8 is so arranged as to slide freely in a sleeve 9.

10 is a collar firmly connected to the sleeve 9, preferably by a pin 10, and located at the end of the sleeve nearest the base of the handle 3. The collar 10 has as fixed parts thereof two sprin gripping-arms 11, that project toward the Iiead of the wrench and are arranged diametrically opposite each other. These gripping-arms terminate in semicylindrical jaws 12, provided interiorly with screwthreads 12.

13 is an expansion-spring surrounding the ripping arms 11 at their outer portions. Zbove said spring and surrounding the sleeve 9 and arms 11 is a compressing slide-ring 14, which serves to compress the arms 11 when forced forward by the pressure of the spring 13. Complete compression of the arms may, if necessary, be secured by the hand of the operator when applied to said ring. When the said slide-ring 14 is thus forced forward, the semicylindrical jaws 12 are caused to firmly grasp the screw-rod 8, the threads of which are accommodated by the screwthreads 12 in the said members 12, thus forming practically a nut the function of which is doublefirst, to act asa stop to the inward or outward movement of the screw-rod 8 in the sleeve 9, and, second, to act as a nut which when rotated serves to impart inward or outward motion to the shank member 5 through the medium of thescrew-rod 8, thus obtaining a finer adjustment of the reciprocating jaw 4, as will be more clearly defined. When the slide-ring 14 is slid rearwardly toward the base of the handle 3, the compressed gripping-arms 12 are allowed to spread away from the screw-rod 8, and the screw-rod and shank 5 are permitted to slide freely within the body 1, thus permittin the movable jaw 4 to be freely reciprocated toward or away from the fixed jaw 2.

15 represents a knob having a stem 15, which is inserted a short distance into the sleeve 9 and firmly secured therein, preferably by the pin 10, so that it will have no movement apart from the said sleeve. The stem of the knob 15 projects loosely through a cylindrical opening in the base 3 of the bandle 3. The knob 15 has preferably a polygonal-shaped portion 16 extending around it and serving as a finger-hold when the said knob is rotated by the application of the operators fingers thereto. The purpose of the knob 15 is to provide for the actuation of the movable jaw 4 after it has been moved when freed by the quick-action features hereinbefore described into approximately the desired position. By turnin the knob 15 a finer and more complete a justment can be secured through themedium of the sleeve 9,

the collar 10, and gripping-arms 11, with their jaws, which when compressed by the slidering 14 serve as a nut, as before explained, which when rotated serves to move the shank 5 throu h its connection with the screw-rod 8 inward or outward, according to the rotating motion, whether right or left, thus secur-' ing a finer adjustment of the reciprocatin jaw 4 relative to the fixed jaw 2 than would be otherwise secured.

While I have shown and described two of the gripping-arms 1 1, I do not wish to be limited to this precise construction, as one gripping-arm alone might be used and a gripping IIC action secured thereby, although I do not consider that this action would be as satisfactory; as that obtained where the two arms are use The threads of the screw-rod 8 are preferably made with flat bearing-surfaces at their forward sides, as seen in Fig. I, thereby affording better bearing-surfaces for the grippingarm jaws 12 when the threads of said jaws are resting against the threads of the screwrod during the use of the Wrench. This construction prevents the threads of the gripping-arm jaws from sliding to the threads of the screw-rod.

I claim 1. In a wrench, the combination of a body having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a gripping-arm having inherent elasticity and adapted to be moved into engagement with said screw-rod and means for moving said arm into engagement with said rod, substantially as set forth.

2. In a wrench, the combination of a body having a jaw, a movable jaw'fitted to said body and having a screw-rod associated therewith, a gripping-arm having inherent elasticity and adapted to be moved into engagement with said screw-rod, and means for moving said arm into engagement with said rod, substantially as set forth.

3. In a wrench, the combination of a body having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a gripping-arm for engagement with said screw-rod, and a slide-ring for moving said arm into engagement with said rod, substantially as set forth.

4. In a wrench, the combination of a body having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a pair of grippin -arms each having inherent elasticity and adapted to be moved into engagement with said rod, substantially as set forth.

5. In a wrench, the combination of a body having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a pair of gripping-arms each having inherent elasticity and provided with interiorly-threaded jaws for engagement with said screw-rod, and means for moving said jaws into en agement with said rod, substantially as set orth.

6. Ina wrench, the combination of a body having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a pair of gripping-arms for engagement with said screw-rod, and a slide-ring for moving said arms into engagement with said rod, substantially as set forth.

7. In a wrench, the combination of a body having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a pair of gripping-arms for engagement with said'screwrod, and a springactuated ring for moving said arms into engagrfinent with said rod, substantially as set ort 8. In a Wrench, the combination of a body having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a pair of spring grippin -arms for engagement with said screw-r0 and a spring-actuated ring for moving said arms into engagement with said rod, substantially as set forth.

9. In a wrench, the combination of a body having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a pair of gripping-arms for engagement with said screw-rod, a slide-ring adapted to ride upon said arms, and a spring for moving said slide-ring, substantially as set forth.

10. In a wrench, the combination of abody having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a sleeve in which said screw-rod is loosely fitted, a pair of grippin -arms attached to said sleeve and arranged or engagement with said screw-rod, a slide-rin adapted to ride on said arms, and a spring for actuating said slide-ring to move said gripping-arms into engagement with said screw-rod, substantially as set forth.

11. In awrench, the combination of a body having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a rotatable sleeve loosely fitted to said rod, means carried by said sleeve arranged to grip said rod, and a slidable member loosely mounted on said gripping means and arranged to move them into engagement with said rod substantially as set forth.

12. In a wrench, the combination of a body having a jaw, a movable jaw fitted to said body and having a screw-rod associated therewith, a rotatable sleeveloosely fitted to said rod, means carried by said sleeve arranged to grip said rod, and a knob fixed to said sleeve, substantially as set forth.

13. In a wrench, the combination of a body having a jaw at one end and a handle at the opposlte end, a movable jaw fitted to said body and having a screw-rod associated therewith, a rotatable sleeve loosely fitted in said handle and surrounding said screw-rod, a pair of gripping-arms carried by said sleeve and arranged for engagement with said screw-rod, a spring-actuated slide-ring adapted to ride upon said gripping-arms to move them into enga ement with said screw-rod, and a knob fiXe to said sleeve, substantially as set forth.

WILLIAM II. GLOVER.

In presence of- BLANOHE HOGAN, H. G. 000K. 

